Search on WeChat Technical Training When it comes to inverter communication, there are analog control, communication control, and terminal control. This article will guide you through the understanding of Modbus-RTU communication between the S7-1200 PLC and the HD20 inverter. Speaking of the Modbus-RTU communication protocol, I believe everyone is familiar with it, as it is … Read more
Click the “Technical Training” above and select “Pin to Public Account” Over 150,000 industrial control professionals follow this WeChat platform: technical sharing, learning exchanges, industrial control videos The day before yesterday, I discovered a true fan who comments every day on the articles shared by Technical Training. He suggested that I share some content on … Read more
The Modbus RTU communication protocol uses a master-slave response method for data communication. Requests can only be initiated by the master (PC, HMI, etc.) through a unique slave address, and the slave (terminal device) responds to the master’s requests, thus enabling half-duplex communication. This protocol only allows the master to initiate requests, and the slave … Read more
Before we start this topic, we should understand a commonly confused issue. The difference between RS485 and MODBUS: RS485 is a physical interface, simply put, it is hardware. MODBUS is an internationally standardized communication protocol used for data exchange between devices from different manufacturers (generally for industrial purposes); the so-called protocol can also be understood … Read more
Search on WeChat Technical Training 1. What is MODBUS? 1. Basic Concepts MODBUS is a communication protocol initially advocated by MODICON (now a brand of Schneider Electric). It has gradually been recognized as a standard communication protocol through practical applications by most companies. As long as data communication or transmission follows this protocol, different systems … Read more
Bluetooth LE is a Bluetooth protocol designed specifically for ultra-low power applications. In this article, we will explore how BLE has become an energy-efficient short-range wireless connection technology. Before diving into the details of BLE, let’s first understand what a communication protocol is. What Is a Communication Protocol? Over time, computing has evolved from standalone … Read more
Once upon a time, people dreamed of owning a mobile phone with Bluetooth functionality. Now, Bluetooth has reached every household, with almost all smartphones featuring Bluetooth capabilities. Bluetooth headsets, keyboards, mice, and speakers have become commonplace; any electronic device lacking Bluetooth functionality feels outdated. So, what exactly is Bluetooth? Why is this wireless technology called … Read more
In practical control projects centered around PLCs, the vast majority of cases rely on the collaboration of touch screens or host computers. This is because we use PLCs for control, mainly to handle some analog quantities, which are the values we need to monitor, such as pressure, temperature, and flow on the equipment. These detected … Read more
Click the above “Easy Learning Electronics” to follow and easily learn electronic knowledge. Easy Learning Electronics Subscription Daily updates on technical articles in the electronics industry and the latest news on microcontrollers, making it easy to learn anytime, anywhere. In a CAN bus, the priority of messages sent by all transceivers ranges from the least … Read more
Have you heard of the LIN bus? It is often seen in automotive bus design. You might ask, “Isn’t there already a CAN bus? Where does the LIN bus come from?” The reason is simple: the CAN bus is too expensive. If an entire vehicle were to use the CAN bus, the costs would be … Read more